<template>
  <!-- 头部部分 -->
  <header class="header">
    <h1>todos</h1>
    <input  
    v-model.trim="name"
    @keyup.enter="add"
    @keyup.esc = "name=''"
    class="new-todo" placeholder="请输入任务名称" autofocus />
  </header>
</template>

<script>
export default {
  data () {
    return {
      name:'',
    }
  },
  methods: {
    add(){
      if(this.name===''){
        return alert('请输入数据')
      }
        this.$emit('add-event',this.name)
        this.name=''
    }
  }
}
</script>

<style></style>
